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arXiv quant-ph/0404108quant-ph
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囚禁$Λ$型原子的磁单极

Induced Magnetic Monopole from Trapped $Λ$-Type Atom

P. Zhang, Y. Li, C. P. Sun

摘要:

研究了两个Rabi跃迁分别与两个具有相同失谐量的经典光场耦合的电磁诱导透明(EIT)态中囚禁原子的空间运动.当内部自由度与质心的空间运动在Born-Oppenheimer近似下解耦时,证明了一定形状的光可以为原子提供一个有效的磁共振场,即与Berry相位有关的感生规范场.这种人工磁致伸缩结构在表征能谱中表现出来。

英文摘要:

We investigate the spatial motion of the trapped atom with the electromagnetically induced transparency (EIT) configuration where the two Rabi transitions are coupled to two classical light fields respectively with the same detuning. When the internal degrees of freedom can be decoupled adiabatically from the spatial motion of the center of mass via the Born-Oppenheimer approximation, it is demonstrated that the lights of certain profile can provide the atom with an effective field of magnetic monopole, which is the so-called induced gauge field relevant to the Berry's phase. Such an artificial magnetic monopole structure manifests itself in the characterizing energy spectrum.

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